1 Features
• New TL103WB, a pin-compatible upgrade to the
TL103W and TL103WA
• Improved specifications of B version amplifiers:
– Supply range: 3V to 36V
– Low maximum input offset voltage: ±2mV
(25°C) and ±2.5mV (full temperature)
– Gain bandwidth: 1.2MHz
– Total supply current: 550μA
– EMI rejection: integrated RF and EMI filter
– Temperature range: –40°C to 125°C
• Improved specifications of B version reference:
– Fixed 2.5V reference
– Tight tolerance maximum of 0.44% (25°C) and
1.04% (full temperature)
– Wide sink-current range:
0.2mA (typical) to 100mA

2 Applications
• Battery chargers
• Switch-mode power supplies
• Linear voltage regulation
• Data-acquisition systems
• Precision constant current sink

3 Description
The TL103Wx devices combine the building blocks
of a dual operational amplifier and a fixed voltage
reference – both of which are often used in the control
circuitry of switch-mode and linear power supplies.
OP AMP1 has the noninverting input internally tied
to a fixed 2.5V reference, while OP AMP2 is
independent, with both inputs uncommitted.
The upgraded TL103WB features improvements
such as a wider supply range (up to 36V), lower
supply current (275μA/amp) and tighter voltage
regulation. This regulation can be achieved through
low offset voltages for both operational amplifiers
(0.3mV typical) and tight tolerances for the voltage
reference (0.44% at 25°C and 1.04% over operating
temperature range).
The TL103WB has a widened temperature range of
–40°C to 125°C.